How will the social landscape change over the next two years as social sharing and communication technologies continue to evolve? Exclusive data from eMarketer show which networks will continue to gain momentum, while others necessarily lose ground. But in spite of talk about Facebook killers, that behemoth and its top competitors are not going anywhere.

“Let’s face it: As much as we complain about those over-sharers who inundate us with baby photos and vacation snapshots, we’re still in love with social networking,” said Debra Aho Williamson, eMarketer’s principal analyst. “More than half the U.S. population uses social networks regularly, and Facebook continues to lead the market. But pay attention to mobile social networking, where Twitter, Instagram, Pinterest and Tumblr are all significant players. That’s where the next phase of growth is happening.”

Here’s a breakdown of how eMarketer predicts market share will change for different U.S. demographics for the top social nets over 2015 and 2016.